Table 1 Characteristics of HIV-exposed infants and their HIV-1 infected mothers enrolled for care at a rural HIV clinic in Kenya (N = 634)

Gender

Male

224 [41.7]

44 [45.4]

268 [42.3]

Female

313 [58.3]

53 [54.6]

366 [57.7]

Age at intake (months)

Median (IQR)

0.9 (0.3–3.5)

0.6 (0.3–1.5)

0.8 (0.3–3.0)

Age group at enrollment (months)

0–3

394 [73.4]

81 [83.5]

475 [74.9]

3–6

52 [9.7]

13 [13.4]

65 [10.3]

>6

91 [17.9]

3 [3.1]

94 [14.8]

Hospital distance (kilometers)

Median (IQR)

7.4 (2.2–13.4)

7.8 (2.2–17.7)

7.4 (2.2–13.4)

Hospital distance categories (kilometers)

0–5

206 [38.4]

40 [41.2]

246 [38.8]

5–10

136 [25.3]

22 [22.7]

158 [24.9]

>10

152 [28.3]

34 [35.1]

186 [29.3]

Missing

43 [8.0]

1 [1.0]

44 [6.9]

Mothers Characteristics (at infant’s birth)

N = 364 [%]

N = 94 [%]

N = 458 [%]

Age (years)

Median (IQR)

28.1 (23.3–33.5)

28.9 (24.8–34.9)

28.4 (23.7–33.8)

Age group (years)

<25

120 [33.0]

24 [25.5]

144 [31.4]

25–35

177 [48.6]

47 [50.0]

224 [48.9]

>35

67 [18.4]

23 [24.5]

90 [19.7]

Education status

No education

133 [36.5]

30 [31.9]

163 [35.6]

Primary

165 [45.3]

41 [43.6]

206 [45.0]

>Secondary

39 [10.7]

11 [11.7]

50 [10.9]

Missing

27 [7.4]

12 [12.8]

39 [8.5]

BMI

Median (IQR)

21.0 (19.2–23.4)

21.4 (19.1–23.2)

21.0 (19.2–23.3)

BMI categories

<18.5

56 [15.4]

15 [16.0]

71 [15.5]

>18.5

296 [81.3]

77 [81.9]

373 [81.4]

Missing

12 [3.3]

2 [2.1]

14 [3.1]

CD4 count

Median (IQR)

409 (264–549)

420 (300–640)

410 (279–571)

CD4 count categories

<350

85 [23.4]

25 [26.6]

110 [24.0]

>350

121 [33.2]

40 [42.6]

161 (35.2)

Missing

158 [43.4]

29 [30.9]

187 (40.8)

Duration on HAART (months)

Median (IQR)

20.6 (2.9–36.9)

28.1 (7.1–44.6)

24.9 (3.4–39.3)

Duration on HAART categories (months)

Not on HAART^a

229 [62.9]

50 [53.2]

279 [60.9]

0–24

71 [19.5]

17 [18.1]

88 [19.2]

>24

64 [17.6]

27 [28.7]

91 [19.8]